Homework Help is Here – Start Your Trial Now!
Math
Statistics
From 80 of its restaurants, Noodles & Company managers collected data on per-person sales and the percent of sales due to "potstickers" (a popular food item). Both numerical variables failed tests for normality, so they tried a chi-square test. Each variable was converted into ordinal categories (low, medium, high) using cutoff points that produced roughly equal group sizes. At a = .05, is per- person spending independent of percent of sales from potstickers? Yes O No Per-Person Spending Low Medium High Column Total Click here for the Excel Data File (a) The hypothesis for the given issue is Hg: Percentage of Sales and Per-Person Spending are independent. Test statistic Degrees of freedom p-value Low 17 9 4 30 Yes (b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal places and p-value to 4 decimal places. Leave no cells blank - be certain to enter "0" wherever required.) (c) We reject the null and find dependence. O No Potsticker % of Sales Medium High 10 5 13 4 4 14 27 23 Row Total 32 26 22 80

From 80 of its restaurants, Noodles & Company managers collected data on per-person sales and the percent of sales due to "potstickers" (a popular food item). Both numerical variables failed tests for normality, so they tried a chi-square test. Each variable was converted into ordinal categories (low, medium, high) using cutoff points that produced roughly equal group sizes. At a = .05, is per- person spending independent of percent of sales from potstickers? Yes O No Per-Person Spending Low Medium High Column Total Click here for the Excel Data File (a) The hypothesis for the given issue is Hg: Percentage of Sales and Per-Person Spending are independent. Test statistic Degrees of freedom p-value Low 17 9 4 30 Yes (b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal places and p-value to 4 decimal places. Leave no cells blank - be certain to enter "0" wherever required.) (c) We reject the null and find dependence. O No Potsticker % of Sales Medium High 10 5 13 4 4 14 27 23 Row Total 32 26 22 80

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
From 80 of its restaurants, Noodles & Company managers collected data on per-person sales and the percent of sales due to "potstickers" (a popular food item). Both numerical variables failed tests for normality, so they tried a chi-square test. Each variable was converted into ordinal categories (low, medium, high) using cutoff points that produced roughly equal group sizes. At a = .05, is per- person spending independent of percent of sales from potstickers? O Yes O No Per-Person Spending Low Medium High Column Total Low 17 9 4 30 Test statistic Degrees of freedom p-value O Yes O NO Potsticker % of Sales Medium 10 13. 4 Click here for the Excel Data File (a) The hypothesis for the given issue is Hg: Percentage of Sales and Per-Person Spending are independent. (c) We reject the null and find dependence. 27 High 5 4 14 23 (b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal places and p-value to 4 decimal places. Leave no cells blank - be certain to enter "0" wherever required.) Row Total 32 26 22 80
Transcribed Image Text:From 80 of its restaurants, Noodles & Company managers collected data on per-person sales and the percent of sales due to "potstickers" (a popular food item). Both numerical variables failed tests for normality, so they tried a chi-square test. Each variable was converted into ordinal categories (low, medium, high) using cutoff points that produced roughly equal group sizes. At a = .05, is per- person spending independent of percent of sales from potstickers? O Yes O No Per-Person Spending Low Medium High Column Total Low 17 9 4 30 Test statistic Degrees of freedom p-value O Yes O NO Potsticker % of Sales Medium 10 13. 4 Click here for the Excel Data File (a) The hypothesis for the given issue is Hg: Percentage of Sales and Per-Person Spending are independent. (c) We reject the null and find dependence. 27 High 5 4 14 23 (b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal places and p-value to 4 decimal places. Leave no cells blank - be certain to enter "0" wherever required.) Row Total 32 26 22 80
Expert Solution
steps

Step by step

Solved in 5 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS